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  • oldman20

    Member
    September 28, 2024 at 4:24 am in reply to: Some floor cleaner samples are milky white while others are not.

    There are no significant changes in pH or environment during the process. about <12 hours . and only about 15% have the above phenomenon in the same stirring device. Specifically, out of 8 outputs, only 1 output has a milky solution about 70% of the time, then returns to normal.

    The system has previously been used to dispense another type of floor cleaner without any problems.

  • oldman20

    Member
    February 25, 2024 at 8:06 pm in reply to: sodium hydroxide instead of ethanolamine

    check your pH at first time making and current?

  • oldman20

    Member
    February 25, 2024 at 8:02 pm in reply to: Should we always use Edt

    afaik, no need with Products are not diluted, and has free-anionic surfactants in formula, since our product not effect with water in house customers!?

  • oldman20

    Member
    February 25, 2024 at 7:43 pm in reply to: What is your favorite mild surfactant (if price is not a concern)?

    i will like CAPB, at least this time

  • oldman20

    Member
    February 5, 2024 at 12:26 am in reply to: Shampoo separation cause and solution for prevention

    maybe too much NaCl? did you trying make high viscosity with salt?

  • oldman20

    Member
    December 26, 2023 at 3:05 am in reply to: mixed acid phosphoric and oxalic, and “common ionic effect”?

    i found reason, clear yellow appears if i use acid phosphoric Korea, which has lightly purple color, while use others acid phosphoric which transparently, solution will stay transparent

    Now only question: common ionic effect. any help? Thank

  • oldman20

    Member
    December 26, 2023 at 3:00 am in reply to: Acid thickner not working when added more acid then certain amount

    i dont think reason is different concentration, maybe acids is different?

  • oldman20

    Member
    June 26, 2025 at 8:57 pm in reply to: About labeling Regulation (EC) No 648/2004, 1223/2009

    For example, you can see it after you can help me? I asked who but not very sure

    Ingredients:

    Aqua,Sodium Laureth Sulfate, Linear Alkylbenzene Sulfonate, C12-14 Alcohol Ethoxylates, Parfum,** Alpha-Isomethyl Ionone, Coumarin, Benzyl salicylate, Galaxolide **, Cocamidopropyl Betaine, Sodium Hydroxide, Sodium chloride, Hydroxypropyl Methylcellulose, Methylchloroisothiazolinone & Methylisothiazolinone, DMDM Hydantoin, Ethylendiamine Tetraacetic Acid

    My Edta is 0.1%. Another type can be up to 0.2%

    And especially I wonder about labeling the irritating ingredient in the fragrance according to SDS and comparing the Regulation 1223/2009, there is Alpha-Isomethyl Ionone, Coumarin, Benzyl Salicylate, Galaxolidide

    Do I record the label as above? There is a labeling rule but there is no specific example, so I am not sure if I write it properly

    1st is …, Parfum,** Alpha-Isomethyl Ionone, Coumarin, Benzyl salicylate, Galaxolide **, …

    2nd is <i style=”font-family: inherit; font-size: inherit;”>…, Parfum, Alpha-Isomethyl Ionone, Coumarin, Benzyl salicylate, Galaxolide, …

    Sincere thanks for your help

  • oldman20

    Member
    June 26, 2025 at 8:46 pm in reply to: About labeling Regulation (EC) No 648/2004, 1223/2009

    many thank, so i understand that the detergent does not need to be labeling if Edta <2%?

    Just curious is the FS you wrote, what is it mean?

    • This reply was modified 4 days, 11 hours ago by  oldman20.
  • oldman20

    Member
    June 26, 2025 at 4:04 am in reply to: About labeling Regulation (EC) No 648/2004, 1223/2009

    Perhaps you do not understand my question, my idea is that EDTA needs to be written in the composition when the two rules I quote above seems to be confused?

  • oldman20

    Member
    October 11, 2024 at 10:41 pm in reply to: Some floor cleaner samples are milky white while others are not.

    I tried putting the same batch of the cloudy sample in a 60 degree oven (meaning the same solution but this sample is still clear) for 1 hour but nothing happened, it was still clear.

    And thank for advice 2, i understand it

  • oldman20

    Member
    October 11, 2024 at 2:19 am in reply to: Some floor cleaner samples are milky white while others are not.

    laureth ethoxylate 12 at 3%

    But previous brews with the same ratio did not have this phenomenon, even the batch immediately following.

  • oldman20

    Member
    October 11, 2024 at 2:17 am in reply to: Some floor cleaner samples are milky white while others are not.

    Thanks for your comment

  • oldman20

    Member
    October 9, 2024 at 8:39 pm in reply to: Some floor cleaner samples are milky white while others are not.

    hi, i’m back. and i’d like to update more information:

    * microbiological test results show no signs of contamination

    * my sample was left in the oven at about 55 degrees, and i really can’t explain it, it’s a bit contrary to what i and you thought: right after taking the sample out the solution looked more opaque, and a bit clearer when it cooled outside.

    i’m really confused, the next batch still had the same brewing and filling system as usual

    • This reply was modified 8 months, 3 weeks ago by  oldman20.
  • oldman20

    Member
    September 28, 2024 at 10:20 pm in reply to: Some floor cleaner samples are milky white while others are not.

    thanks for your idea, i will try it. but i dont think it has much to do with kraft point, Because the ambient temperature where I am is summer, about 32-35 degrees Celsius.

    no one has the same idea as me about the possibility of microbial contamination? but microbial contamination in 2-3 hours causing the cloudiness as in the picture is it too fast?

  • oldman20

    Member
    October 9, 2024 at 8:33 pm in reply to: Serum won’t clear up

    i think so too

  • oldman20

    Member
    September 28, 2024 at 4:17 am in reply to: Some floor cleaner samples are milky white while others are not.

    I used <em style=”font-family: inherit; font-size: inherit; -webkit-text-size-adjust: 100%;”>TroyCare™ BD55 by Troy Corporation (Arxada), afaik it fine on my floor cleaner which pH approximate 7. I Tried sending samples for microbiological testing, but not 100% sure and this phenomenon has never happened before. I am really confused and need to hear ideas on the possibilities of what could be causing this phenomenon from everyone

  • oldman20

    Member
    February 25, 2024 at 8:15 pm in reply to: Suspending agent for exfoliating agents

    agree

  • oldman20

    Member
    February 25, 2024 at 7:57 pm in reply to: Higher viscosity? What substances to increase micelles?

    yeah, anionic surfactant with sodium chloride always start point! afaik

  • oldman20

    Member
    February 25, 2024 at 7:49 pm in reply to: Preservatives: Do Consumers Actually Care?

    Would i know about name of skincare manufacturing factory in Vietnam & Malaysia, if it doesn’t bother you?

  • oldman20

    Member
    February 5, 2024 at 7:22 pm in reply to: Shampoo separation cause and solution for prevention

    afaik, anionic combine with cationic surfactant isnt good idea!

  • oldman20

    Member
    January 12, 2024 at 10:30 pm in reply to: mixed acid phosphoric and oxalic, and “common ionic effect”?

    i trying make solution for remove calcium rust. Tested oxalic acid and compare with citric acid, seem citric work better (i used egg shield for test!)

    So it not correct?

    NaCl is possible to accelerate the reaction with metal when added to NaCl due to the phenomenon of “common ionic effect”: it provides Cl- ion to the solution, then Cl- combined with H+ in acid solution-> HCl
  • oldman20

    Member
    December 26, 2023 at 6:23 pm in reply to: CIT/MIT AND DMDM-H COMBINATION

    sorry, what is mean of this

    it’s used only in rinse off products.

    So do you think 7.5ppm (0.00075%) is recommended for all personal care products (maybe for homecare products also)?

  • oldman20

    Member
    December 26, 2023 at 2:57 am in reply to: CIT/MIT AND DMDM-H COMBINATION

    thank for your information. in my location, at least many manufacturers i know usually put 0.1% CMIT/ MIT in formula. while i read from NCBI.NLM.NIH.GOV recommended 0.0015% (15ppm)

    is it reason for allergy users when using that product?

  • oldman20

    Member
    December 25, 2023 at 12:44 am in reply to: about use NaOH to Neutralizing LAS (Linear Alkylbenzene Sulfonate)

    thank your answer! maybe i missing it

    btw, so about product of NaOH + Las reaction, is it any role in washing? or just product of acid-basic reaction, for neutralization las acid, and nothing else?

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